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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 951 (Wiring Systems - Introduction) >> Diagnostic Information and Procedures >> Testing for Short to Ground >> With a Test Lamp

With a Test Lamp

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the power feed (i.e. fuse, control module) from the suspect circuit.
  2. Disconnect the load.
  3. Connect 1 lead of the test lamp to battery positive voltage.
  4. Connect the other lead of the test lamp to 1 end of the circuit to be tested.
  5. If the test lamp illuminates, there is a short to ground in the circuit.
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